Clinical trial No longer in our active list Interventional Ages 18 to 75

Surgery for kidney stones on both sides at the same time

Official title: Evaluation of Efficacy and Safety Profile of Bilateral Synchronous Simultaneous Stone Surgery for Kidney Stones

Run by Marmara University · NCT03599297 · Data updated 2026-05-14

This study is no longer in our active list. It may have stopped recruiting or finished. The details below are as of 2026-05-14 and are kept for reference. Check ClinicalTrials.gov for its current status, or see similar studies below.

This study is testing whether doing kidney stone surgery on both sides at the same time can be safe and effective for patients with stones in both kidneys.

Quick facts

Study typeInterventional
Ages18 Years to 75 Years
SexAll
Enrollment100 (estimated)
SponsorMarmara University
Academic / other
Locations1 site (Istanbul)
Trial IDNCT03599297 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are patients scheduled for kidney stone surgery who have bilateral kidney stones.

Probably not a fit

Patients with unilateral kidney stones or those not scheduled for surgery may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This study evaluates the outcomes of bilateral synchronous simultaneous stone surgery (BSSSS) in patients with bilateral kidney stones. The approach aims to perform both surgeries concurrently to reduce the number of operations and overall surgical time. Patients will undergo supine percutaneous nephrolithotomy (PCNL) and retrograde intrarenal surgery (RIRS) as part of the intervention. The study seeks to assess the effectiveness and safety of this innovative surgical technique.

Why it matters

Potential benefit: If successful, this approach could lead to fewer surgeries and shorter recovery times for patients with kidney stones.

How similar studies have gone: While the concept of simultaneous surgeries is gaining traction, this specific approach is relatively novel and has not been extensively tested in prior studies.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* patients scheduled for kidney stone surgery according to European Association Urology, Urolithiasis guidelines
* patients with bilateral kidney stones

Exclusion Criteria:

* none

Where it's running

  • Marmara University Hospital
    Istanbul, Turkey
    Recruiting

Study contacts

  • Principal investigator: Yiloren Tanidir, Ass. Prof. — Marmara University, School of Medicine, Department of Urology
  • Study coordinator: Yiloren Tanidir, Ass. Prof.
  • Email: yiloren@yahoo.com
  • Phone: 00905325694275

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.